1. Polynomial form of the Hilbert–Einstein action

   • M. O. Katanaev

   Research Article 18 July 2006 Pages: 1233 - 1240

2. The hole argument for covariant theories

   • M. Iftime
   • J. Stachel

   Research Article 26 July 2006 Pages: 1241 - 1252

3. Spherically symmetric, self-similar spacetimes

   • Sanjay M. Wagh
   • Keshlan S. Govinder

   Research Article 18 July 2006 Pages: 1253 - 1259

4. On higher order gravities, their analogy to GR, and dimensional dependent version of Duff’s trace anomaly relation

   • Mehrdad Farhoudi

   Research Article 06 July 2006 Pages: 1261 - 1284

5. Unifying phantom inflation with late-time acceleration: scalar phantom–non-phantom transition model and generalized holographic dark energy

   • Shin’ichi Nojiri
   • Sergei D. Odintsov

   Research Article 11 July 2006 Pages: 1285 - 1304

6. Flat Information Geometries in Black Hole Thermodynamics

   • Jan E. Åman
   • Ingemar Bengtsson
   • Narit Pidokrajt

   Research Article 21 June 2006 Pages: 1305 - 1315

7. Crossing of the w  =   − 1 Barrier in Two-fluid Viscous Modified Gravity

   • Iver Brevik

   Research Article 21 June 2006 Pages: 1317 - 1328

8. Comment on the paper by J. T. Jebsen reprinted in Gen. Rel. Grav. 37, 2253 – 2259 (2005)

   • J. Ehlers
   • A. Krasiński

   Comment 18 July 2006 Pages: 1329 - 1330